Shrubs, erect, 1-2 m tall. Young branches densely grayish brown pubescent, glabrous when old. Stipules caducous; petiole pubescent; leaf blade broadly orbicular, 5-7 × 6-8 cm, subleathery, abaxially rusty pubescent on young leaves, becoming less pubescent when old, adaxially grayish pubescent, primary veins 9-11, veins convex abaxially, base deeply cordate to almost truncate, apex bifid to 1/4; lobes with obtuse or rounded apices. Inflorescence corymbose-racemose, terminal or lateral, 6-7 cm in diam., rusty pubescent; bracts and bracteoles caducous, lanceolate. Pedicel 15-20 mm, pubescent. Flower buds upper part subovoid, constricted from middle downward. Receptacle funnelform, ca. 5 mm; calyx lobes 5, lanceolate, outside pubescent. Corolla pink, ca. 3.5 cm in diam.; petals broadly obovate, 10-12 mm in diam., outside golden hairy at middle, claw ca. 10 mm, pubescent. Fertile stamens 3; filaments to 3 cm, glabrous; anthers oblong, ca. 4 mm. Staminodes 6 or 7, ca. 2 cm, slender. Ovary stalked, golden tomentose on suture; stalk ca. 12 mm, pubescent; stigma small. Legume strap-shaped, compressed, 15-20 × 2.5-3 cm, apex beaked, sutures swollen; valves leathery, glabrous. Seeds subcordiform, compressed, ca. 12 × 9 mm; testa blackish, shiny. Fl. Apr-Aug, fr. May-Oct.
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